United States Senate Elections, 2018 (The More Things Changed)

United States Senate Elections, 2018

November 6, 2018
Class 1 (33 of the 100) seats in the United States Senate 51 seats needed for a majority
Majority party Minority party Third party   Leader Mitch McConnell Chuck Schumer Deirdre McCloskey (Chair of the LNC) Party Republican Democratic Libertarian Leader's seat Kentucky New York Illinois Seats before 48 51 0 Seats after 54 43 2 Seat change ▲6 ▼8 ▲2
Majority Leader before election Chuck Schumer Democratic Elected Majority Leader Mitch McConnell Republican

Elections to the United States Senate were held November 6th, 2018, with 33 of the 100 seats in the Senate being contested in regular elections and two seats being contested in special elections. The winners will serve six-year terms from January 3rd, 2019, to January 3rd, 2025. Democrats had 25 seats up for election, as well as the seats of one independent Senator - Angus King of Maine - who caucuses with them. Republicans had nine seats up for election. Special elections were scheduled in Minnesota and Mississippi.

Elections to the U.S. House of Representatives, 39 gubernatorial elections, and several other state and local elections were also held on this date.

The Republican Party regained the majority in the chamber - which the Democratic Party had taken in the previous election cycle - gaining six seats. The Democratic Party lost six seats, while the Libertarian Party gained two seats. Recounts took place in close elections in Missouri, Wisconsin, and Virginia.

Partisan Composition Before Election

Among the 33 Class 1 Senate seats up for regular election in 2018 were 25 held by Democrats, one by an independent who caucuses with the Senate Democrats, and nine by Republicans. The Class 2 seats in Minnesota and Mississippi, held by interim appointees, were also up for election.

Democrats could have only afforded to lose two Senate seats and still have a working majority with Vice President Luis Gutiérrez breaking the tie in their favor. One of the Republican seats is open as a result of the retirement of Senator Orrin Hatch of Utah, the Senate President Pro Tempore Emeritus. Democrats defended seven seats in states won by Donald Trump in the 2016 presidential election, while Republicans only defended one seat in a state won by Hillary Clinton in 2016. The Libertarian Party, which held no seats in the chamber since Senator Joe Miller switched his affiliation to the Republican Party for a gubernatorial bid, also contested most of the elections.

Races

Arizona

Incumbent: Jeff Flake (R) - Ran for Re-Election; Lost Primary

Nominees		Votes	%	±
	Kelli Ward	935,235	45.61%
	Kyrsten Sinema	931,339	45.42%
	Adam Kokesh	183,930	8.97%
Total		2,050,504	100%

California

Incumbent: Dianne Feinstein (D) - Won Re-Election

Nominees		Votes	%	±
	Dianne Feinstein	6,879,172	61.9%
	James P. Bradley	4,234,192	38.1%
Total		11,113,364	100%

Connecticut

Incumbent: Chris Murphy (D) - Won Re-Election

Nominees		Votes	%	±
	Chris Murphy
	Matthew Corey
Total			100%

Delaware

Incumbent: Tom Carper (D) - Won Re-Election

Nominees		Votes	%	±
	Tom Carper
	Robert Arlett
	Nadine Frost
Total			100%

Florida

Incumbent: Bill Nelson (D) - Lost Re-Election

Nominees		Votes	%	±
	Rick Scott
	Bill Nelson
	Joe Wendt
Total			100%

Hawaii

Incumbent: Mazie Hirono (D) - Won Re-Election

Nominees		Votes	%	±
	Mazie Hirono
	Ron Curtis
Total			100%

Indiana

Incumbent: Joe Donnelly (D) - Lost Re-Election

Nominees		Votes	%	±
	Joe Donnelly
	Mike Braun
	Mike Wherry
Total			100%

Maine

Incumbent: Angus King (I) - Won Re-Election

Nominees		Votes	%	±
	Angus King
	Zak Ringelstein
	Walter E. Whitcomb
	Eric Brakey
Total			100%

Maryland

Incumbent: Ben Cardin (D) - Won Re-Election

Nominees		Votes	%	±
	Ben Cardin
	Tony Campbell
	Arvin Vohra
	Neal Simon
Total			100%

Massachusetts

Incumbent: Elizabeth Warren (D) - Won Re-Election

Nominees		Votes	%	±
	Elizabeth Warren
	John Kingston
	Shiva Ayyadurai
Total			100%

Michigan

Incumbent: Debbie Stabenow (D) - Won Re-Election

Nominees		Votes	%	±
	Debbie Stabenow
	John James
	Jimmy E. Greene
Total			100%

Minnesota

Incumbent: Amy Klobuchar (DFL) - Won Re-Election

Nominees		Votes	%	±
	Amy Klobuchar
	Jim Newberger
	Shawn Ruotsinoja
Total			100%

Minnesota (Special)

Incumbent: Tina Smith (DFL) - Lost Re-Election

Nominees		Votes	%	±
	Richard Painter
	Tina Smith
	Karen Housley
Total			100%

Mississippi

Incumbent: Roger Wicker (R) - Won Re-Election

Nominees		Votes	%	±
	Roger Wicker
	David Baria
	Danny Bedwell
Total			100%

Mississippi (Special)

Incumbent: Cindy Hyde-Smith (R) - Ran for Re-Election; Lost Primary

Nominees		Votes	%	±
	Chris McDaniel
	Mike Espy
Total			100%

Missouri

Incumbent: Claire McCaskill (D) - Won Re-Election

Nominees		Votes	%	±
	Claire McCaskill
	Josh Hawley
	Robert Stephens
Total			100%

Montana

Incumbent: Jon Tester (D) - Won Re-Election

Nominees		Votes	%	±
	Jon Tester
	Matt Rosendale
	Rick Breckenridge
Total			100%

Nebraska

Incumbent: Deb Fischer (R) - Won Re-Election

Nominees		Votes	%	±
	Deb Fischer
	Jane Raybould
	Jim Schultz
Total			100%

Nevada

Incumbent: Dean Heller (R) - Ran for Re-Election; Lost Primary

Nominees		Votes	%	±
	Danny Tarkanian
	Jacky Rosen
	Tim Hagan
Total			100%

New Jersey

Incumbent: Bob Menendez (D) - Lost Re-Election

Main Article: United States Senate Election in New Jersey, 2018 (The More Things Changed)

Nominees		Votes	%	±
	Jack Cittarelli
	Bob Menendez
	Bob Hugin
Total			100%

New Mexico

Incumbent: Martin Heinrich (D) - Won Re-Election

Nominees		Votes	%	±
	Martin Heinrich
	Mick Rich
	Aubrey Dunn, Jr.
Total			100%

New York

Incumbent: Caroline Kennedy (D) - Won Re-Election

Nominees		Votes	%	±
	Caroline Kennedy
	Chele Chiavacci Farley
	Aaron Commey
Total			100%

North Dakota

Incumbent: Heidi Heitkamp (D) - Lost Re-Election

Nominees		Votes	%	±
	Kevin Cramer
	Heidi Heitkamp
Total			100%

Ohio

Incumbent: Sherrod Brown (D) - Won Re-Election

Nominees		Votes	%	±
	Sherrod Brown
	Jim Renacci
	Charlie Earl
Total			100%

Pennsylvania

Incumbent: Bob Casey Jr. (D) - Won Re-Election

Nominees		Votes	%	±
	Bob Casey Jr.
	Lou Barletta
	Dale Kerns
Total			100%

Rhode Island

Incumbent: Sheldon Whitehouse (D) - Won Re-Election

Nominees		Votes	%	±
	Sheldon Whitehouse
	Robert Flanders
Total			100%

Tennessee

Incumbent: Harold Ford (D) - Lost Re-Election

Nominees		Votes	%	±
	Marsha Blackburn
	Harold Ford
	Cole Ebel
Total			100%

Texas

See Also: United States Senate Election in Texas, 2018 (The More Things Changed)

Incumbent: David Dewhurst (R) - Ran for Re-Election; Lost Primary

Nominees		Votes	%	±
	Beto O'Rourke
	Katrina Pierson
	John Mackey
Total			100%

Utah

See Also: United States Senate Election in Utah, 2018 (The More Things Changed)

Incumbent: Orrin Hatch (R) - Retiring

Nominees		Votes	%	±
	Jon Huntsman
	Jenny Wilson
	Craig Bowden
Total			100%

Vermont

Incumbent: Howard Dean (D) - Won Re-Election

Nominees		Votes	%	±
	Howard Dean
	Brooke Paige
	Oliver Olson
Total			100%

Virginia

Incumbent: John W. Marshall (D) - Won Re-Election

Nominees		Votes	%	±
	John W. Marshall
	E.W. Jackson
	Matt Waters
Total			100%

Washington

Incumbent: Maria Cantwell (D) - Won Re-Election

Nominees		Votes	%	±
	Maria Cantwell
	Susan Hutchison
	Mike Luke
Total			100%

West Virginia

Incumbent: Joe Manchin (D) - Lost Re-Election

Nominees		Votes	%	±
	Don Blankenship
	Joe Manchin
	Sharon Lynn Potter
Total			100%

Wisconsin

Incumbent: Tammy Baldwin (D) - Lost Re-Election

Nominees		Votes	%	±
	Kevin Nicholson
	Tammy Baldwin
	Robert Burke
Total			100%

Wyoming

Incumbent: John Barrasso (R) - Ran for Re-Election; Lost Primary

Nominees		Votes	%	±
	Erik Prince
	Gary Trauner
	Dave Dodson
Total			100%